Amends part A (Temporary Assistance for Needy Families) (TANF) of title IV of the Social Security Act to change the TANF supplemental grant for population increases in certain states into simply a supplemental grant for certain states, for FY2009 and FY2010, including both qualifying states that received and qualifying states that did not receive a supplemental grant for FY2008, if their TANF resources are below average.